/Engine/Plugins/Runtime/Metasound/Source/MetasoundFrontend/Public/MetasoundParameterPack.h
template<typename T, int32 MaxNumItems> [ESetParamResult](API\Plugins\MetasoundFrontend\ESetParamResult) SetArrayParameter ( const [FName](API\Runtime\Core\UObject\FName) & Name, const [FName](API\Runtime\Core\UObject\FName) & InTypeName, const T & InValue, bool OnlyIfExists )